Mark 708DP Series – Double Packing Control Valve

Mark 708DP Series – The Mark 708 with double packing is an alternative to a bellows stem seal and is used when standard packing will not adequately contain the controlled media. The optional bonnet features a double packing arrangement separated by a lantern ring. With a double packed bonnet, lubricant is pumped into the packing sets, supplying a tight seal similar to that provided by a bellows stem seal. The double packed bonnet is an excellent choice when service conditions could cause damage to a bellows assembly.

Description

The Mark 708 with double packing is an alternative to a bellows stem seal and is used when standard packing will not adequately contain the controlled media. The optional bonnet features a double packing arrangement separated by a lantern ring. With a double packed bonnet, lubricant is pumped into the packing sets, supplying a tight seal similar to that provided by a bellows stem seal. The double packed bonnet is an excellent choice when service conditions could cause damage to a bellows assembly.

Minimum Data Requirements to Size Valve

  • Ideal for applications where service conditions can damage a bellows assembly
  • Features standard bonnet port for use in lubricating the packing for added protection against leakage or for use as a detection port for monitoring potential fugitive emissions
  • For use in R & D, pilot plants and low flow process applications

Data Sheet
Mark 708DP Series Data Sheet

Installation & Maintenance Sheet
Mark 708 Series Installation & Maintenance Manual

Condensed Catalog
Product Guide
Product Guide – A4

Mark 708DP Success

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